From b84d429c2ec59e54a89d9d4e34b0df9f22172e8f Mon Sep 17 00:00:00 2001
From: ameerj <52414509+ameerj@users.noreply.github.com>
Date: Mon, 27 Dec 2021 23:59:32 -0500
Subject: glsl_context_get_set: Add alternative cbuf type for broken drivers

some drivers have a bug bitwise converting floating point cbuf values to uint variables. This adds a workaround for these drivers to make all cbufs uint and convert to floating point as needed.
---
 src/shader_recompiler/backend/glsl/glsl_emit_context.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'src/shader_recompiler/backend/glsl/glsl_emit_context.cpp')

diff --git a/src/shader_recompiler/backend/glsl/glsl_emit_context.cpp b/src/shader_recompiler/backend/glsl/glsl_emit_context.cpp
index bc9d2a904..bb7f1a0fd 100644
--- a/src/shader_recompiler/backend/glsl/glsl_emit_context.cpp
+++ b/src/shader_recompiler/backend/glsl/glsl_emit_context.cpp
@@ -428,9 +428,10 @@ void EmitContext::DefineConstantBuffers(Bindings& bindings) {
         return;
     }
     for (const auto& desc : info.constant_buffer_descriptors) {
-        header += fmt::format(
-            "layout(std140,binding={}) uniform {}_cbuf_{}{{vec4 {}_cbuf{}[{}];}};",
-            bindings.uniform_buffer, stage_name, desc.index, stage_name, desc.index, 4 * 1024);
+        const auto cbuf_type{profile.has_gl_cbuf_ftou_bug ? "uvec4" : "vec4"};
+        header += fmt::format("layout(std140,binding={}) uniform {}_cbuf_{}{{{} {}_cbuf{}[{}];}};",
+                              bindings.uniform_buffer, stage_name, desc.index, cbuf_type,
+                              stage_name, desc.index, 4 * 1024);
         bindings.uniform_buffer += desc.count;
     }
 }
-- 
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